Найдите значение выражения: 7,3⋅4/9+7,3⋅5/9

2) $7,3 \cdot \frac{4}{9} + 7,3 \cdot \frac{5}{9} = 7,3 \cdot (\frac{4}{9} + \frac{5}{9}) = 7,3 \cdot 1 = 7,3$ 3) $1\frac{1}{12} : (1\frac{13}{18} - 2\frac{5}{9}) = \frac{13}{12} : (\frac{31}{18} - \frac{23}{9}) = \frac{13}{12} : (\frac{31}{18} - \frac{46}{18}) = \frac{13}{12} : (-\frac{15}{18}) = \frac{13}{12} : (-\frac{5}{6}) = \frac{13}{12} \cdot (-\frac{6}{5}) = -\frac{13}{10} = -1,3$ 4) $(\frac{9}{16} + 2\frac{3}{8}) \cdot 4 = (\frac{9}{16} + \frac{19}{8}) \cdot 4 = (\frac{9}{16} + \frac{38}{16}) \cdot 4 = \frac{47}{16} \cdot 4 = \frac{47}{4} = 11,75$ 5) $45 \cdot (\frac{1}{9})^2 - 23 \cdot \frac{1}{9} = 45 \cdot \frac{1}{81} - \frac{23}{9} = \frac{5}{9} - \frac{23}{9} = -\frac{18}{9} = -2$ 6) $-0,2 \cdot (-10)^2 + 55 = -0,2 \cdot 100 + 55 = -20 + 55 = 35$ 7) $\frac{0,9}{1 + \frac{1}{5}} = \frac{0,9}{\frac{6}{5}} = 0,9 : 1,2 = \frac{9}{12} = 0,75$ 8) $\frac{1}{\frac{1}{36} + \frac{1}{45}} = \frac{1}{\frac{5}{180} + \frac{4}{180}} = \frac{1}{\frac{9}{180}} = \frac{180}{9} = 20$ 9) $3 \cdot 108 : 12 + (3204 - 2675) : 23 = 324 : 12 + 529 : 23 = 27 + 23 = 50$ 10) $2\frac{4}{13} \cdot (\frac{3}{8} - \frac{4}{15}) - 13 : 6\frac{1}{2} = \frac{30}{13} \cdot (\frac{45 - 32}{120}) - 13 : \frac{13}{2} = \frac{30}{13} \cdot \frac{13}{120} - 13 \cdot \frac{2}{13} = \frac{30 \cdot 13}{13 \cdot 120} - 2 = \frac{1}{4} - 2 = -1,75$